Thursday, November 3, 2011

25 Horses Puzzle

This is a classic puzzle which can look simple.Given 25 horses, find the best 3 horses with minimum number of races. Each race can have only 5 horses. You don't have a timer.Now the challange is how we can do it in 7 races.

Solution

We will have 5 races with all 25 horsesLet the results bea1,a2,a3,a4,a5b1,b2,b3,b4,b5c1,c2,c3,c4,c5d1,d2,d3,d4,d5e1,e2,e3,e4,e5

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